* {margin: 0;padding: 0;}
body, html {width: 100%;height: 100%;}
body {
    background: url(http://pic1.win4000.com/wallpaper/e/58e6f381091d5.jpg) no-repeat;
    background-size:cover;
    background-position:center;
}
#box {
    width: 800px;
    height: 600px;
    background: rgba(255, 255, 255, .5);
    margin:0 auto;
    position: relative;
    top:16%;
}

#box .box-head {
    height: 60px;
    background: #00ffac;
}

.box-head .h-span {
    color: #fff;
    line-height: 60px;
    font-size: 24px;
    float: left;
    margin-left: 20px;
}

#box .box-body {
    width: 760px;
    height: 420px;
    padding: 20px;
    overflow: auto;
}

/*overflow:auto;div内文本超出后设置滚动条*/

/*手动设置滚动条样式*/
.box-body::-webkit-scrollbar {
    width: 4px;
}

.box-body::-moz-scrollbar {
    width: 4px;
}

.box-body::-webkit-scrollbar-track {
    background: #808080;
    border-radius: 2em;
}

.box-body::-webkit-scrollbar-thumb {
    background-color: #03a9f4;
    border-radius: 2em;
}

.box-body::-moz-scroll-track {
    background: #808080;
    border-radius: 2em;
}

.box-body::-moz-scroll-thumb {
    background-color: #03a9f4;
    border-radius: 2em;
}

/*自定义滚动条的样式*/
/*机器人的css*/
.box-body .rotWord span {
    width: 40px;
    height: 40px;
    background: url(https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=47106712,1636322560&fm=27&gp=0.jpg);
    background-size:cover;
    background-position:center;
    float: left;
    border-radius:20px;
}

.box-body .rotWord p {
    float: left;
    padding: 10px;
    background: #00ffae;
    margin-left: 10px;
    border-radius: 8px;
    word-break: break-all;
    max-width: 220px;
}

/*word-break:break-all;max-width:220px; 文本p自动换行*/
.rotWord {
    overflow: hidden;
}
/*清楚浮动*/
/*myself的css*/
.box-body .myWord span {
    width: 40px;
    height: 40px;
    background: url(https://ss1.bdstatic.com/70cFuXSh_Q1YnxGkpoWK1HF6hhy/it/u=523248224,3147732123&fm=27&gp=0.jpg);
    background-size:cover;
    background-position:center;
    float: right;
    border-radius:20px;
}

.box-body .myWord p {
    float: right;
    padding: 10px;
    background: #00ff00;
    margin-right: 10px;
    border-radius: 8px;
    word-break: break-all;
    max-width: 220px;
} /*word-break:break-all;max-width:220px; 文本p自动换行*/
.myWord {
    overflow: hidden;
    margin: 4px 0;
}
/*清楚浮动*/
#box .box-footer {
    width: 760px;
    height: 60px;
    padding: 0 20px;
}

.box-footer #input {
    width: 620px;
    height: 60px;
    background: rgba(0, 0, 0, .1);
    border-radius: 8px;
    text-indent: 10px;
    color: #fff;
    float: left;
    font-size: 18px;
    padding-left: 20px;
    outline: none;
    overflow: hidden;
    border: none;
}

.box-footer #btn {
    width: 100px;
    height: 60px;
    color:#fff;
    background: rgba(0, 164, 205, 0.6);
    border-radius: 8px;
    user-select: none;
    text-align: center;
    text-align: center;
    line-height: 60px;
    float: right;
    font-size: 18px;
    cursor: pointer;
}